The croton (Codiaeum variegatum) appears to have it all: colorful
foliage, nearly limitless leaf forms, and a cultish following. But these
plants do have a drawback—they're difficult to please indoors. In their
native habitats, crotons like humid, warm conditions, with dappled
light and plentiful water. The problem indoors is typically temperature;
too cold, and they start losing leaves. However, crotons are well worth
the effort because a well-grown croton is an explosion of color.
Growing Conditions:
Light:
Bright, indirect light. They do not like unfiltered, direct sunlight,
but thrive in dappled sunlight. Vibrant colors depend on bright light.
Water: Keep evenly moist in the summer, and reduce watering in the winter to biweekly. Mist frequently during the growth period.
Temperature: Keep above 60ºF and do not expose to cold drafts.
Soil: A well-drained potting soil is perfect.
Fertilizer: Slow-release pellets or liquid fertilizer during the growing season.
Water: Keep evenly moist in the summer, and reduce watering in the winter to biweekly. Mist frequently during the growth period.
Temperature: Keep above 60ºF and do not expose to cold drafts.
Soil: A well-drained potting soil is perfect.
Fertilizer: Slow-release pellets or liquid fertilizer during the growing season.
Propagation:
Crotons are easily propagated through stem cuttings. Use a rooting hormone
to increase the odds of success. Crotons sometimes produce "sports," or
shoots that are completely different from the parent plant. These can
be potted up independently. Crotons do not grow well from seed as the
plant is unstable and the offspring will not resemble the parent. Only
cuttings will produce a plant that is identical to the parent.
Repotting:
Repot in spring if necessary.
Varieties:
There
are hundreds and hundreds of croton varieties, with names like
Dreadlocks, Ann Rutherford, Mona Lisa, and Irene Kingsley. For a plant
with this incredible diversity, it's amazing there is only species (C.
variegatum). However, crotons are genetically unstable, so each plant is
unique, and interesting varieties are highly prized by enthusiastic
collectors. Crotons are often subdivided by their leaf type: curling,
twisted, oak leaf, narrow, broad, oval, etc.
Grower's Tips:
A
well-grown croton will keep its leaves all the way to the soil
level—and the trick to this is to provide steady warmth. Even in outdoor
settings, crotons will drop leaves after a cold night. However, these
plants respond well to trimming. If a croton becomes leggy, prune it
back hard at the beginning of the growing season, move it outside, and
the plant will regrow from the cut portion. As a last note: vibrant leaf
colors depend on the quality of light. Don't shy away from providing
lots of bright, shifting sunlight.
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